Pulverizer.



No. 775,068. PATENTED NOV. 15, 1904.

A. RAYMOND, DEGD.

M. M. BABTELMB. ADMINISTBATBIX.

PULVERIZER.

APPLICATION FILEDvLIyJaL No MODEL. '"-J a sums-snm 2.

No. 775,068. PATBNTED NOV. 15, 1904. A. RAYMOND, DBCD.

M. M. BARTELME. ADMINISTRATRIX.

PULVERIZBR.

N0 MODEL. 3 SHEETS-SHEET 3.

No. 775,068. Patented November 15, 1904.

UNITED ISTATES yPATENT OFFICE.

ALBERT RAYMOND, OF CHICAGO, ILLINOIS; MARY M. BARTELME ADMIN- ISTRATRIXOF SAID RAYMOND, DECEASED.

PULVERIZER.

SPECIFICATION forming part of Letters Patent No. 775,068, dated November15, 1904.

Application filed June 23, 1900. Serial No. 21,280. (No model.)

T @Il Wfl/07W it "my CUYLGWHI l of Fig. 2, and Fig. 7 is a detail viewof one 5C Be itknown that I, ALBERT RAYMOND, a citiof theadjusting-slums. Zen of the United States, residing at Chicago,Similarletters of referenceindicate the same in the county of Cook andState of Illinois, parts in the several figures of the drawings.haveinvented certain new and usefullmprove- Referring by letter to theaccompanying' ments in Pulverizers, of which the following drawings, Aindicates a sheet-metal easing of 55 is a specification. any suitableshape mounted upon a base B,

rIhis invention relates to improvements in upon which is also mounted ateach side of pulverizers especially designed for reducing the casingpillow-blocks C, which afford at IO cement and light commodities, andhas for its their lower ends a bearing for the drivingprimary object toproduce a simple, effective, shaft D and at their upper ends a bearingfor 60 and cheap machine of great capacity, yetwhich the driven shaft E,the lower bearing being a requires comparatively small power for itsoptixed bearing and the upper bearing being aderation. justable, asexplained farther on. I5 Another object is to have the g'rinding-roll-Mounted rigidly upon the driving-shaft D,

ers of such character that but one of them is to which power may beapplied by the pulley 65 power-driven, the other being' driven from theF or in any other convenient manner, is the lirst-mentioned roller byfriction induced by driving-roller, made up of the hub G, the disks theweight thereof, whereby the rollers will H at each end thereof, thegrinding-ring' I, fitautomatically accommodate themselves to vatingsnugly upon the hub between the disks,

riations in the character of the material, as and the bolts J, passingthrough the hub and 70 well as pass through fractious materialwiththrough each of the disks, so that the roller out injury to therollers. may be readily separated and a new grinding- A further objectis to have the grindingring substituted for an old worn one withoutrollers so that they may be quickly and cheaply loss of time or anyother material than that repaired and the grinding-surface renewed ofthe old ring. The disks H extend beyond 75 without the loss of theentire roller. the periphery of the grinding-ring I, and the A stillfurther object is to have the driven grinding-disks N fit therebetween.Thus, as roller composed of independent sections freely will be readilyunderstood, the material being mounted, so that any one or more sectionscrushed will be prevented from escaping from thereof may move radiallytoward and away the lower roll. 8o 'from the drivingroller` wherebylumps or Mounted upon the driven shaft E, which infractious material maylift and pass by one stead of being immediatelyabove the drivingsectionof the driven roller without affecting' shaft is located out of Verticalalinement therethe operation of the other sections thereof and with, isthe driven roller, made up of the hub also without undue strain upon theshaft sup- K, the disks L at each end thereof, the bolts 85 porting thedriving or the driven roller. M, passing through the hub and both of theThese and such other objects as may heredisks L, binding them tightlytogether,and the inafter appear are attained by the devices rollerproper, composed of aseries of disks N,

40 illustrated in the accompanying' drawings, in arranged side by sideand each having apwhichplied to the periphery thereof a grinding-ring 9oFigure l represents a sectional elevation of O of the same thickness asthe disks N. It

a pulverizer embodying my invention. Fig. will be noted that thecombined thickness of 2 is a vertical section on the line 2 2 of Fig.the disks N is slightly less than the distance l. Fig. 3 is a detailperspective view of a between the inner opposing' faces of the disks hubof one of the g'rinding-rollers. Fig. -l is L, so that the disks N arenot clamped be- 95 a face view of one of the hub-anges. Fig'. tween thedisks L, but, on the contrary, are 5 is a vertical section on the line 5of Fig. free to move with relation to each other; but Q. Fig. 6 is avertical section on the line 6 6 such movement is intended to bepractically all radial, as the axial or lateral movement thereof shouldbe no more than sufficient to allow a free radial movement. It will alsobe noted that each of the disks N has a central circular hole P ofsomewhat greater diameter than the hub K, and by reason of the relativediameters of the driving and driven rollers and the distance between theaxes thereof the driven rollers at all times rest upon thedriving-roller and have only one point of contact with the hub K, as atQ in Fig. 5. This point of contact between the driven roller and the hubK will of course change slightly as the shaft E, carrying the hub K, isadjusted toward and away from the driving-shaft D, provision for suchadjustment being illustrated in Fig. l, in which the fastening-bolts Rof the bearing-block S of the shaft E pass through elongated slots T inthe pillow-blocks C. Between the lower end of the bearingblock and ashoulder on the pillow-block is inserted a series of shims U, which arecut away at one side, as clearly illustrated in Fig. 7, to embrace thesteadying-bolt V, which passes through the bearing-block S at rightangles to the bolts It and through the shoulder WV on the pillow-block,so as to aid the bolts R in holding the bearing firmly in any adjustedposition. Obviously by the insertion or removal of any number of shimsthe position of the bearing-blocks S, and consequently of the shaft E,may be readily adjusted so as to allow a greater or less rise of thedriven roller away from the driving-roller, according to the characterof the material being operated upon. As above pointed out, the rollersare out of vertical alinement, but with their axes parallel. In actualfact, as shown in the drawings, Fig. 5, the center of gravity of theLipper roller falls without the periphery of the lower roller; but thisrelative arrangement may be varied as desired. There'is a distinctadvantage arising from the fact that the rollers are out of verticalalinement. This advantage consists in providing a force exerted inopposition to the rotating movement of the upper roller due to thefrictional contact. This force is the weight of the roller itself, whichweight normally tends to move the roller in a direction contrary to thatindicated by the arrow in Fig. 5; but as it also tends to bring theperiphery of the roller into closer contact with the periphery of thelower roller a closer frictional contact is obtained, thus making itpossible to obtain a greater crushing effect without placing additionalstrain on the driving-shaft. Y

The purpose of having the driven roller made up in disk-like sections isto give greater freedom at different points along the grinding-surface,according to the exigencies arising at any particular point along thesurfacesuch, for instance, as the feeding in of a lump or lumps offractions material which the rollers cannot crush or pulverize. In suchcase only that section of the driven roller which comes in contact withthe fractions material will back oli' away from the driving-roller, soas to allow the fractions material to pass through, the remaining`sections of the roller continuing at work as before. This arrangementmakes each and every section of the driven roller independent of all theother sections, yet working in harmony and in unison therewith, exceptwhen occasion demands that it shall give way for the passage ofobstructing material. In dotted lines in Fig. 2 I have shown the tworight-hand sections raised or backed off from the driving-roller, thesame effect being shown by dotted lines in Fig. 5.

In operation the driving-roller is continuously rotated, while thedriven roller depends for its rotation upon the friction resulting' fromthe grinding of the material between the meeting surfaces of saidrollers, Fig. 5 clearly illustrating the operation of the machine andshowing a feed-hopper X at one side of the casing delivering the cementor other material through the periphery thereof into the jaw between therollers, an agitator Y being also shown in the hopper to assist in thefeeding and prevent clogging thereof. The action of the grinding-rollersis such as to reduce the lumps of cement to an impalpable powder, inwhich form it flows off of theoppositeside of the grinding-rolls, whichturn in the direction indicated by arrows in Fig'. 5, and no ungroundproduct can pass between the rollers, except such substances as aresufficiently fractions to resist the crushing effect of the drivenroller, and in such event such material will pass through without injuryto the machine or straining the shafts or bearings thereof.

A pulverizer constructed in accordance with my invention has greatcapacity, because the operation thereof is exceedingly rapid, therollers are continuously at work upon the material, while the grindingaction tends to constantly draw in fresh material, though only asrapidly as the rollers can take care of it.

Obviously various modifications in the construction and arrangement ofthe parts' of my machine may be made without departing from thespirit ofmyinventionv-suclnforinstance, as varying the number of sections of thedriven roller or the manner in which the sections are secured togetherand adjusted, and, indeed, it would be no departure from the broad ideaof my invention to have the driven roller solid or formed in one pieceso long as the roller is capable of bodily radial movement toward andaway from the drivingroller without moving the shaft of the drivenroller with it, and allsuch changes are contemplated by my invention.

Having described my invention, what I claim, and desire to secure byLetters Patent,

l. In a pulverizer, the combination with a TOO driving-roller,of adrivenroller normally resting upon and rotated by frictional contact with thedriving-roller, said rollers being' out of vertical alinement, saiddriven rollers comprisinga plurality of disks each havinga central bore,a hub of less diameter than the bore of the disks on which the disks aremounted and have independent radial movement,said hub havinglongitudinally-arran ged bolt-openings, disks of smaller diameter thanthe disks forming the said roller arranged at opposite sides of thelatter, and bolts passed through said smaller-diameter disks and thebolt-openings in the hub, substantially as described.

In a pulverizer, the combination with the driving-roller, of a drivenroller composed of a plurality of disks, a grinding-ring mounted on eachof said disks, a hub on which the disks are loosely mounted and haveradial movement independently of each other, a shaft on which the hub ismounted, disks mounted on the said shaft and engaging the ends of thehub, and tie-bolts passing through the said disks and hub, substantiallyas described.

3. In a pulverizer, the combination with the driving-roller, of thedriven roller foi'med with a central bore, a shaft extending th roughthe said central bore of the said driven roller, a hub mounted on thesaid shaft and being arranged within the bore of the said driven roller,said hub being of smaller diameter than the bore of the said drivenroller, and being formed with a series of longitudinal openings, boltsarranged in the openings of the said hub, and disks mounted on theopposite ends of the said bolts, substantially as and for the purposespecified.

4. In a pulverizer, the combination with a d rivi ng-roller, of a drivenroller normally resting upon and rotated by frictional contact with thedriving-roller, said driven roller being' composed of a plurality ofdisks, each formed with a central bore, of a shaft extending through thecentral bores of the said disks, a hub mounted on the shaft, the boresof said disks being greater in diameter than the diameter of the saidhub, and disks removably secured to the outer ends of the said hub.

5. ln a pulverizer, the combination with the driving-roller, and disks,of greater diameter than the roller, secured to its opposite sides, of adriven roller composed of a plurality of disks each having a centralbore, said disks normally resting on the said d riving-roller betweenthe said first-named disks, a shaft extending through the bores of thedisks, a hub, and disks secured to the outer ends of the said hub,substantially as described.

6. In a pulverizer, the combination with the frame includingpillow-blocks provided with rearwardly-inclined upper ends and havingoutwardly-extending shoulders at the lower ends of said inclinedportions, a positivelydriven shaft journaled in the pillow-blocks, aroller mounted on said shaft, bearing-blocks mounted upon the saidinclined portions of the pillow-blocks, a shaft journalcd in saidbearing-blocks, a roller mounted on said shaft and driven by frictionalcontact with the firstmentioned roller, securing bolts passing throughsaid bearing-blocks and through slots provided therefor in the inclinedportions of the pillow-blocks to permit the adjustment of said blocks,and steadying bolts passed through the bearing-blocks and through theoutwardly-extending lugs of the pillow-block at right angles to thesecuring-bolts, substantially as described.

T. In a pulverizer, the combination of a pair of pillow-blocks formed attheir upper ends with inclined portions, and having outwardlyextending'shoulders at the lower end of said inclined portions, bearing-blocksmounted on said inclined portions, securing-bolts passing through saidbearing-blocks and through slots provided therefor in the inclinedportions of the pillow-blocks to permit the adjustment of saidbearing-blocks, steadying-bolts passed through the bearing-blocksendwise thereof and through the outwardly-extending lugs of thepillow-blocks, means on said steadyingbolts for holding the blocks intheir adjusted position, a shaft journaled in the bearingblocks, aroller mounted on said shaft, a driveshaft journaled in thepillow-blocks, and a roller on said drive-shaft coacting with thefirst-mentioned roller.

ALBERT RAYMOND. Witnesses:

M. E. SHIELDS, J. E. HALLENBECK.

